Revoker for regularly-moving transferrer arms



0. V. PAYNE Dec. 10, 1929.

REVOKER FOR REGULARLY MOVING TRANSFERRER ARMS Filed Dec. 18. 1926 4 A..mmnlllllllllllll Patented Dec. 10, 1929 lJl llTED STATES PATENT OFFICE OSCAR V. PAYNE, OF WORCESTER, MASSACHUSETTS, ASSIGNGR '30 CROMPTON & KIlO l L-ES LOOM .WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS BEVOKER FOR REGULARLY-MOVING TRANSFERRER ARMS Application filed December 18, 1926. Serial No. 155,741.

This invention relates to the form of loom having a detector mounted in a regularly moving transferrer arm of the type set forth in patent to Ill-yon #1572516, and it is the principal object of the invention to provide means for revoking the transfer on a loom of this type when the shuttle is improperly placed under the magazine.

In looms of the type specified the transferrer arm is given a quicl; downward move ment on every detecting pick of the loom when a shuttle is under the magazine, this movement being derived from a cam on the bottom shaft and a lever operated thereby. As heretofore made the cam has been effective to move the transferrer downwardly irrespective of the position of the shuttle so that an improper transfer might result when the shuttle projected too far from the box, and is an important object of my invention I provide means for preventing the comtion of the downward movement of the .-sferrer arm when a shuttle is improperly placed.

In a multi-color magazine loom a bobbin will ordinarily move to a position under the transferrcr arm immediately prior to the descent of the latter and if transfer into the ed shuttle is prevented it is highly de- A to release the untransferred bobbin improper sequence of colors would result if the untransferred bobbin were put into a shuttle which had not indicated for replenishn It is a further object of my invention to not only prevent transfer when the shuttle is misplaced but also to provide means acting in conjunction with the transferrer arm for releasing the untransferred bobbin when a transfer is prevented, to the end that the colors might not become confused.

It is a more particular object of my inven- .LOE to provide a pair of independently movtuators for the transferrer arm, one i actuators acting under normal condit ens to complete the downward movement of rnsfcrrer arm when proper conditions er exist, and the other actuator r to complete downward movethe transferrer arm at a later time in the cycle of the pick in order to expel an untransferred bobbin.

It occasionally happens that a bobbin will be oversize and will therefore stick in the releasing cradles, the result being that the bobbin moves toward transfer position so slowly as not to arrive under the transfcrrer arm in time for transfer,but willbeheldto one side by the transferrer arm andthus remainin the magazine without-being transferred. It is a further object of my present invention to arrest the downward movement of the transferrer arm on revoking beats of the loom with the transferrer arm sufficiently high so that a bobbin slow in its movement to transfor position may pass under the arm and thereafter be released as the transferrer arm is moved downwardly by the second actuator previously mentioned.

lVith these and other objects which will appearias the description proceeds, my invention relates to the arrangements and combinations of parts hereinafter set forth, and

' more particularly pointed out in the claims.

In the accompanying drawings, wherein a convenient embodiment of my invention is shown,

Fig. 1 is a side elevation of certain portions of a multi-color weft replenishing mechanism having my invention applied thereto, the view being taken from the center of the loom and certain parts being shown in section and others broken away for the sake of clearness, the revoker being shown in raised or revoking position,

Figs. 2 and 3 are horizontal sections on lines 22 and 3--3 of Fig. 1, respectively.

Fig. 4 is a vertical section on line 44 of Fig. 1,

Fig. 5 is a View of certain parts shown in Fig. l with the revoker arm in normal down position, showing the relation of the resetting device carried by the lay, and

Fig. 6 is an enlarged detail horizontal section on line 66 of Fig. 1.

Referring to the drawings, I have shown a loom side 10 having a breast beam 11 to support a multi-color weft replenishing mechanism 12 and have indicated a lay 13 as being in forward or transferring position under the magazine 12. A transferrer arm 14 is pivoted to the magazine as at 15 and receives a vertical reciprocating movement by means of a rod 16 the lower end of which has connection with a cam lever 17 pivoted to the frame at 18 and having a rearwardly and upwardly extending arm on which is mounted a roll 19 received by a cam groove 20 of a cam 21. Said cam is secured to the bottom shaft 22 of the loom and is given a complete revolution every other pick of the loom. Said cam groove 21 has a high point 23 which corresponds to the downward position of the transferrer arm 14'and also has a lower part 24 which corresponds to the high position of the transferrer arm.

During the normal operation of the matter thus far described the transferrer arm is brought down every second pick of the loom when the shuttle is under the magazine and the lay is in its forward position so that a detector, indicated at 25, may have a detecting action on the yarn on the active shuttle. The matter thus far set forth, except for the type of connection indicated between the lever 17 and rod 16, may be substantially the same as set forth in the aforesaid patent to Ryon.

As previously stated the mechanism already described together with the motion 7 contemplated in the Ryon patent would 0perate to bring the transferrer arm down on all detecting beats of the loom irrespective of the position of the active shuttle. It is desirable to prevent the completion of the transferring stroke when the shuttle is misplaced and I achieve this result by the use of an auxiliary cam and lever which may be brought into operative relation with the transferrer arm by a shuttle feeler when the latter is engaged by a misplaced shuttle. In carrying my invention into effect I secure to the bottom shaft a secondcam having its high point 41 spaced angularly behind high point 23 of cam 21. Said auxiliary cam has a greater part of its surface identical with the corresponding surface of cam 21 and I provide said cam with a groove 42 in which moves a roll 43 mounted on auxiliary cam lever 44 mounted to move about the center of lever 17. The forward ends of levers 17 and 44 are formed alike, each being shaped as indicated at 45 in Fig. 1.

The bottom of rod 16 is provided with a head 46 having a slot 47 proportioned to receive the forward ends of the cam levers one at a time. Rod 16 has slidably mounted thereon collar 48 from which projects a stud 49 having pivotal connection with a bell crank lever '50 pivoted on a fixed pin 51. The lever 50 is connected to the lower end of a rod 52 provided with a positioning element 53 having notches 54 cooperating with a yielding lock plunger 55 mounted in a casing 56, see Fig. 6, and held in one of the notches 54 by a spring 57. Said locking element may be formed of two parts as indicated in Fig. 6 for convenience in removal and is held in adjusting position along the rod 52 by screws 58.

The controlling part of the apparatus in cludes a shuttle feeler 59 preferably pivoted on the stud 15 and having a rearwardly and upwardly extending arm 60 and also having pivotal connection as at 61 with the upper end of rod 52. The lay 13 has a resetting member 62 secured thereto, said member having an off-set 63, seeFig. 2, which is adapted for engagement with the upwardly extending arm 60 of said feeler. A cotter pin 64 in pin 51 prevents spring 57 from pushing the positioning element 53 away from plunger 55.

Under normal conditions the shuttle feeler is in down position as indicated in Fig. 5, being held yieldingly in its position by the plunger 55 and the positioning element 53. The parts are so related that when the shuttle feeler is in its down position the bell crank 50 cooperating with collar 48 will position the head 46 of the actuator rod 16 in registry with the main actuator lever 17 so that so long as the shuttle feeler is as indicatedin Fig. 5 the cam 21 will determine the movements of the transferrer arm. hiscam is so timed with the motion of the lay as to bring the transferrer arm down when the lay is on front center as previous ly stated, and said arm will remain under control of the main cam 17 so long as the shuttle is properly placed and it does not engage the shuttle feeler as the lay moves forwardly.

Vfhen the shuttle is not correctly placed, however, it will engage the shuttle feeler dur ing the forward movement of the lay and lift said feeler to the position indicated in Fig. 1, this movement being permitted by yielding of plunger 55. Lifting of rod 52 rocks the bell crank lever on its center and collar 48 moves the lower end of rod 16 from the normal position to a position where the head 46 will register with the auxiliary cam lever 44. This movement occurs while the cam rolls are on similar parts of their respective cams, the forward ends of the main and auxiliary levers being in horizontal alignment. As the bottom shaft continues to rotate after the shifting of head 46 the forward end of main lever 17 will have a downward movement without actuating the transferrer arm and at a later time in the cycle of the pick the high point 41 on auxiliary lever 44 will actuate the auxiliary lever to depress the transferrer arm. This motion does not come until after the lay has moved back from the position shown in Fig. 1, thus causing the transferrer arm 14 to complete its downward movement to expel the untransferred )obbin B at a time when the lay and shuttle S have moved to a all) As shown in Fig. 1 the cams are so related that the forward ends of the levers 17 and 44 begin their downward movement together and continue together for a short time, the purpose of his construction being to permit the shuttle feeler to shift control of the rod head 46 from lever 17 to lever 44 when necessary without causing an abrupt action in the movement of the transferrer arm.

As the lay moves to the rear or to the left as shown in Fig. l the off-set 63 will engage the upper part of arm and will depress the shuttle feeler to return the same to the position shown in Fig. 5. The cams are so related that the shuttle feeler will not be restored to normal position until both of the rolls 19 and 43 are on similar or equal surfaces of their respective cams. The work done by the upward movement of the transferrer arm as regards the releasing of a bobbin to initiate transfer will be the same as set forth in said patent to Ryon and will not take place until the auxiliary lever has passed from control of the high point 41 of the cam. It is to be understood that the weft detector 25 will not give an indication of weft exhaustion when the transferrer arm is depressed by the auxiliary cam lever, said detector being of the type as set forth in said patent to Ryon.

From the foregoing it will be seen that I have provided means for preventing transfer in looms of the type set forth when the shuttle is not properly placed and that provision is made for expelling the untransferred bobbin at a somewhat later time in the cycle of the pick when the same may be discharget without striking the lay or any part thereof.

t will further be seen that the dwells of the cam are such as to hold the transferrer arm in a raised position at the time of revocation of transfer so that a bobbin which is slow in moving toward transfer position may move under the arm and be expelled thereby. It will also be seen that I have provided two actuators for the transferrer arm, one actuator having a movement to efiect a normal transfer when the lay is on front center and the shuttle is properly placed and the other actuator being effective to depress the trans ferrer arm some time after the lay has moved rearwardly from front position so as to expel the untransferred bobbin. It will also be seen that I have provided means for resetting the shuttle feeler so as to restore control of the transferrer arm to the principal cam and lever. While I have shown a transferrer hava regular movement every detecting beat 0 of the loom, yet I do not wish to be held to this type of transfer, as I believe I am the first to employ the transferrer arm to expel an un transferred bobbin.

In order to hold the bobbin in transfer position I provide a pair of supports, one of which may be fixed to the magazine frame as at 65. The other support 66 is pivoted on one of the magazine tie rods 67 and is held normally in bobbin supporting position by a torsion spring 68 one end of which is held by the frame 12 and the other end of which engages the support 66 to hold the same yieldingly in bobbin holdin aosition. The transferrer will push an untransferred bobbin through the supports, member 66 yielding to permit such movement of the bobbin.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed but what I claim is 1. In a weft replenishing mechanism for looms having a shuttle and means whereby a bobbin moves to transfer position to be inserted in the shuttle at a predetermined point in the pick of the loom, means to engage an untransferred bobbin and expel the same from the replenishing mechanism by a positive motion at some time in the pick of the loom other th an aid predetermined point.

2. In a weft replenishing loom having a lay and a shuttle and a transferrer arm to effect transfer when the lay is in a given position, means to give the transferrer arm a movement toward the shuttle to expel an untransferred bobbin at a predetermined point in the cycle of the loom when the lay is removed from the given position and when the shuttle is misplaced.

3. In a weft replenishing loom having a lay, a shuttle and a transferrer arm, means to initiate movement of the transferrer arm toward transferring position on all detecting beats of the loom when the lay is in its forward position, and means to prevent completion of the movement of the transferrer arm while the lay is in its forward position and during continued running of the loom when a shuttle is misplaced.

' 4. In a weft replenishing loom having a lay, a shuttle and a transferrer arm, two independent means operable to move the transferrer arm, one of said means operating to move the transferrer arm when the lay is in its forward position, and mechanism effective when a shuttle is misplaced to cause the other of said means to operate at a lat-er time in the pick after the lay has moved rearwardly from its forward position.

5. In a weft replenishing loom having a transferrer arm, a pair of actuators for the transferrer arm, one of said actuators being eflective to give the arm a transferring movement under normal conditions and the other actuator being efiective to give the transferrer arm a transferring movement after the time of operation of the first actuator if a shuttle is misplaced.

6. In a weft replenishing loom having a shuttle and a transferrer arm, a pair of cams having contours portions of which are alike and portions of which are unlike, and connections between the cams and transferrer arm to cause movement of the latter by one of the cams under normal Conditions and movement of the transferrer arm by the other cam when the shuttle is misplaced.

7 In a weft replenishing loom having a transferrer arm under which a bobbin awaits transfer, means to transfer the bobbin at a predetermined point in the cycle of the loom when the shuttle is properly placed, and means controlled by the shuttle and acting through the transferrer arm to eXpel the bobbin at a different point in the cycle of the loom when the bobbin remains untransferred due to a misplaced shuttle.

8. In a weft replenishing loom having a transferrer arm under which a bobbin awaits transfer, two actuators for the transferrer arm, one to cause the transferrer arm to move the bobbin at a pre-determined point in the pick of the loom when conditions are normal, and the other to cause the transferrer arm to expel an untransferred bobbin at a later point in the cycle of the pick of the loom.

9. In a weft replenishing loom having a transferrer arm under which a bobbin awaits transfer, means to give the transferrer arm a 7 regular transferring movement in a prescribed time interval, under normal conditions, a shuttle feeler to detect the position of the shuttle, and additional means connected to and controlled by the shuttle feeler and effective while the loom continues in operation to delay the completion of the movement of the transferrer arm until after said time interval is completed.

10. In a weft replenishing mechanism for a loom having means whereby a bobbin moves to transfer position, a transferrer mechanism capable of having two distinct movements, one effective under normal conditions at a given point in the cycle of the loom to transfer a bobbin and one effective under abnormal conditions at a difierent point in the cycle of the loom to expel an untransferred bobbin.

11. In a Weft replenishing loom having a transferrer arm under which a bobbin awaits transfer, periodically acting means to give the transferrer arm a complete transferring movement at a predetermined point in the cycle of the pick, a shuttle feeler movable from normal to abnormal position by a misplaced shuttle, and means controlled by the shuttle feeler and effective during continued operation of the loom to prevent the com-- pletion of the movement of the transferrer arm at the predetermined point in the cycle of the pick when a misplaced shuttle moves the shuttle feeler to abnormal position.

12. In a weft replenishing loom having a transferrer arm under which a bobbin awaits transfer, means to give the transferrer arm complete periodic transferring movements at a predetermined point in the cycle of the pick, a shuttle feeler movable from normal to abnormal position by a misplaced shuttle, means controlled by the shuttle feeler and effective during continued operation of the loom to prevent the completion of the move ment of the transferrer arm at a predetermined point in the cycle of the pick when a misplaced shuttle has moved the shuttle feeler to abnormal position, and means dependent upon operation of the loom to return the shuttle feeler to normal position.

13. In a wef replenishing mechanism for a loom having a shuttle and means whereby the bobbin moves to transferring position, a transferrerarm effective under normal conditions to move a bobbin from transfer position into the shuttle, and means effective during continued operation of the loom and when the shuttle is misplaced to arrest the movement of the transferrer and hold the same at a point above the bobbin when the latter is in transfer position and until after the normal time for transfer and to thereafter move the transferrer arm toward a bobbin in a transferring position. V

14. In a 'multi-color weft replenishing mechanism for a loom having a shuttle and means whereby a bobbin may move from any one of several sources to a common transfer position, a transferrer arm, means effective under normal conditions to move the transferrerarm to transfer the bobbin in transfer position into the shuttle, when the latter is properly placed, and other means effective when the shuttle is misplaced to hold the transferrer arm at a point above the path of the bobbin as the same moves toward transfer position and to move said transferrer arm into engagement with an untransferred bobbin and expel the same from the replenishingmechanism when the shuttle is out of transfer position.

15. In a weft replenishing loom, a transferrer arm, a yieldable support to hold the bobbin in transfer position, means acting normally to effect transfer at a given point in the cycle of the loom and when transfer conditions are proper, and means to move the transferrer arm downwardly against a bobbin to move the latter against the action of the giveway to expel the bobbin at a later time in the cycle of the loom than the said given point.

16. In a weft replenishing loom having a supply of bobbins any one of which may move to transfer position, a transferrer arm, ayielding support normally in bobbin holding position to support a bobbin fortransfer, means to revoke the transfer at the normal time if the shuttle is misplaced, and means to move the transferrer arm toward the bobbin to expel the latter against the action of the yielding support at a later time in the pick than the normal time for transfer if transfer is revoked.

17. In a weft replenishing loom having a transferrer arm under which a bobbin awaits transfer, two devices each capable of moving the transferrer arm toward transfer position, one device acting at a given time and under normal conditions and the other device acting at a different time and under abnormal conditions, a shuttle feeler to disconnect the transferrer arm from the device which acts on the transferrer arm under normal conditions and means acting through the shuttle feeler to reconnect the transferrer arm and device.

18. In a weft replenishing loom having a transferrer arm under which a bobbin awaits transfer, a device to move the transferrer arm toward transfer position under normal conditions, a shuttle feeler efl ectivewhen a shuttle is misplaced to disconnect the device and transferrer arm, and means acting through the shuttle feeler to reconnect the device and transferrer arm.

19. In a weft replenishing mechanism for looms having means whereby a bobbin moves to transfer position, transfer mechanism to effect transfer of a bobbin at a given time in the cycle of the loom, and said transfer mechanism to engage an untransferred bobbin after said given time in the cycle of the pick and move the untransferred bobbin positively out of transferring position.

20. In a weft replenishing loom having a shuttle and a transferrer arm means to move the transferrer arm toward the shuttle at regularly recurring intervals under normal conditions, and mechanism controlled by a misplaced shuttle to render the means incapable of giving the transferrer arm its regular movement at the normal time while the loom continues to run when the shuttle is misplaced.

In testimony whereof I have hereunto atfixed my signature.

OSCAR V. PAYNE. 

